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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#ifndef PROFILER_GFC_SAMPLER_H
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#define PROFILER_GFC_SAMPLER_H
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#include "GeneralsConfig.h"
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#include <kern_priv.h>
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#include <piprofiler/ProfilerGenericClassesKrn.h>
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#include <piprofiler/ProfilerTraces.h>
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#include "GppSamplerImpl.h"
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extern void UsrModLr(TUint32*);
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/*
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*
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* GFC sampler definition
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*
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*/
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template <int BufferSize>
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class DProfilerGfcSampler : public DProfilerGenericSampler<BufferSize>
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{
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public:
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DProfilerGfcSampler(struct TProfilerGppSamplerData* );
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~DProfilerGfcSampler();
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void Sample(TAny* aPtr);
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TInt Reset(DProfilerSampleStream* aStream, TUint32 aSyncOffset);
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private:
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struct TProfilerGppSamplerData* gppSamplerData;
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TUint32 gfcSample[3];
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TUint8 encodedSample[15];
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TUint32 repeat;
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};
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/*
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*
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* GFC sampler implementation
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*
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*/
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template <int BufferSize>
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DProfilerGfcSampler<BufferSize>::DProfilerGfcSampler(struct TProfilerGppSamplerData* gppSamplerDataIn) :
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DProfilerGenericSampler<BufferSize>(PROFILER_GFC_SAMPLER_ID)
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{
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this->gppSamplerData = gppSamplerDataIn;
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LOGSTRING2("CProfilerGfcSampler<%d>::CProfilerGfcSampler",BufferSize);
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}
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template <int BufferSize>
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TInt DProfilerGfcSampler<BufferSize>::Reset(DProfilerSampleStream* aStream, TUint32 aSyncOffset)
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{
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LOGSTRING2("CProfilerGfcSampler<BufferSize> - entry",BufferSize);
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this->repeat = 0;
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for(TInt i(0);i<3;i++)
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{
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this->gfcSample[i] = 0;
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}
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LOGSTRING2("CProfilerGfcSampler<%d>::Reset - calling superclass reset",BufferSize);
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DProfilerGenericSampler<BufferSize>::Reset(aStream);
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LOGSTRING2("CProfilerGfcSampler<%d>::Reset - called superclass reset",BufferSize);
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// add the first sample, indicating the gfc trace version
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TUint8 firstSample[33];
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TPtr8 firstSampleDesc(&(firstSample[1]),32);
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firstSampleDesc.Zero();
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firstSampleDesc.Append(_L8("Bappea_V"));
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firstSampleDesc.Append(PROFILER_GFC_SAMPLER_VERSION);
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firstSampleDesc.Append(_L8("_GFC"));
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firstSample[0] = firstSampleDesc.Size();
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this->iSampleBuffer->AddSample(firstSample,(firstSample[0]+1));
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LOGSTRING2("CProfilerGfcSampler<BufferSize> - exit",BufferSize);
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return KErrNone;
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}
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template <int BufferSize>
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void DProfilerGfcSampler<BufferSize>::Sample(TAny* aPtr)
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{
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LOGSTRING2("CProfilerGfcSampler<%d>::Sample",BufferSize);
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TUint32 usr_mod_link_reg;
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UsrModLr(&usr_mod_link_reg);
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TUint32 pc(gppSamplerData->lastPcValue);
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TUint32 lr(usr_mod_link_reg);
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TUint32 sa(gppSamplerData->sampleNumber);
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if(pc == gfcSample[0] && lr == gfcSample[1] && sa == gfcSample[2]+1)
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{
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// encode repeat
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repeat++;
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gfcSample[2] = sa;
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LOGSTRING2("CProfilerGfcSampler<%d>::Sample - repeat",BufferSize);
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return;
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}
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else if(repeat > 0)
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{
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TUint8 repeatSample[3];
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repeatSample[0] = 0xff;
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repeatSample[1] = (TUint8)(repeat>>8);
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repeatSample[2] = (TUint8)repeat;
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this->iSampleBuffer->AddSample(repeatSample,3);
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LOGSTRING3("CProfilerGfcSampler<%d>::Sample - Encoded repeat %d",BufferSize,repeat);
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repeat = 0;
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}
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TInt ptr(3);
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// encode program counter value
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if(pc>=gfcSample[0])
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{
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pc = (pc-gfcSample[0]);
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encodedSample[0] = 0x80;
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}
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else
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{
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pc = (gfcSample[0]-pc);
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encodedSample[0] = 0x00;
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}
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if(pc <= (TUint32)0xff)
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{
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encodedSample[0] |= 1;
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encodedSample[ptr] = (TUint8)pc;ptr++;
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}
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else if(pc <= (TUint32)0xffff)
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{
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encodedSample[0] |= 2;
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encodedSample[ptr] = (TUint8)pc;ptr++;
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encodedSample[ptr] = (TUint8)(pc>>8);ptr++;
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}
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else if(pc <= (TUint32)0xffffff)
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{
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encodedSample[0] |= 3;
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encodedSample[ptr] = (TUint8)pc;ptr++;
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encodedSample[ptr] = (TUint8)(pc>>8);ptr++;
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encodedSample[ptr] = (TUint8)(pc>>16);ptr++;
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}
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else
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{
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encodedSample[0] |= 4;
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encodedSample[ptr] = (TUint8)pc;ptr++;
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encodedSample[ptr] = (TUint8)(pc>>8);ptr++;
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encodedSample[ptr] = (TUint8)(pc>>16);ptr++;
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encodedSample[ptr] = (TUint8)(pc>>24);ptr++;
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}
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// encode link register value
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if(lr>=gfcSample[1])
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{
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lr = (lr-gfcSample[1]);
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encodedSample[1] = 0x80;
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}
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else
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{
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lr = (gfcSample[1]-lr);
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encodedSample[1] = 0x00;
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}
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if(lr <= (TUint32)0xff)
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{
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encodedSample[1] |= 1;
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encodedSample[ptr] = (TUint8)lr;ptr++;
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}
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else if(lr <= (TUint32)0xffff)
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{
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encodedSample[1] |= 2;
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encodedSample[ptr] = (TUint8)lr;ptr++;
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encodedSample[ptr] = (TUint8)(lr>>8);ptr++;
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}
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else if(lr <= (TUint32)0xffffff)
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{
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encodedSample[1] |= 3;
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encodedSample[ptr] = (TUint8)lr;ptr++;
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encodedSample[ptr] = (TUint8)(lr>>8);ptr++;
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encodedSample[ptr] = (TUint8)(lr>>16);ptr++;
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}
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else
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{
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encodedSample[1] |= 4;
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encodedSample[ptr] = (TUint8)lr;ptr++;
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encodedSample[ptr] = (TUint8)(lr>>8);ptr++;
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encodedSample[ptr] = (TUint8)(lr>>16);ptr++;
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encodedSample[ptr] = (TUint8)(lr>>24);ptr++;
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}
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// endcode sample number difference
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if( (sa - gfcSample[2]) < (TUint8)0xff)
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{
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encodedSample[2] = (sa-gfcSample[2]);
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}
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else
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{
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encodedSample[2] = 0xff;
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encodedSample[ptr] = (TUint8)sa;ptr++;
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encodedSample[ptr] = (TUint8)(sa>>8);ptr++;
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encodedSample[ptr] = (TUint8)(sa>>16);ptr++;
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encodedSample[ptr] = (TUint8)(sa>>24);ptr++;
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}
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// store the values for the next sample
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gfcSample[0] = gppSamplerData->lastPcValue;
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gfcSample[1] = usr_mod_link_reg;
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gfcSample[2] = gppSamplerData->sampleNumber;
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this->iSampleBuffer->AddSample(encodedSample,ptr);
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LOGSTRING3("CProfilerGfcSampler<%d>::Sample Size %d",BufferSize,ptr);
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return;
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}
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template <int BufferSize>
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DProfilerGfcSampler<BufferSize>::~DProfilerGfcSampler()
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{
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LOGSTRING2("CProfilerGfcSampler<%d>::~CProfilerGfcSampler",BufferSize);
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}
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#endif
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